Wayne Grudem has four of his theology books on sale for February 2 and 3.
His Systematic Theology is offered, as well as two condensed versions, “Christian Beliefs” being the shortest, and “Bible Doctrine” being a longer abridgement.
$3.99 for Bible Doctrine: Essential Teachings of the Christian Faith [Kindle Edition]
$3.99 for Politics – According to the Bible: A Comprehensive Resource for Understanding Modern Political Issues in Light of Scripture [Kindle Edition]